thomas



(No Model.) Y. 2 Sheets-Sheet 1.

J. W. THOMAS.

STOVE. No'. 273,912. Patented Mar.13,1883.

Fig. 1.

will Witnesses. Inventor.

1MM/4f. V/M ma@ www .220 fmu@ N4 Perma Phnwuxmupm. wnhingm n. c.

(No Model.) 2 Sheets-Sheet 2.

Y J. W. THOMAS.

STUVE.

No. 273,912. Y Patented Mar. 13,1883.

Fig. 6.'

@E c@ `:QM l Witnesses. C; Inventor y, MMM ww Wmww WM "rQ/Mgmw@ UNITED STATES ATENT Fries.

JOHN W. THOMAS, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO HIMSELF, AND C. M. WHITMIRE, OF BUFFALO, AND CHAS. S. HOUGHTALING, OF

NEW YORK, N. Y.

STOVE.

SPECIFICATION forming part of Letters Patent No. 273,912, dated March 13, 1883.

Application tiied December 29,1882. (No model.)

1o all whom t may concern: I

Beit known that l, JOHN W. THOMAS, a citizen of the United States, residing in Jersey City, in the county ot' Hudson and State ot' 5 New Jersey, have invented certain new and useful Improvements iu Stoves, of which the following is a specitication.

The object of my invention is to provide the means for a free circulation and ventilation of io the oven during the process ot'baking or roasting, and for adjusting the amount of circulation of air in the oven, all of which will be fully and clearly hereinafter described by ret'- erence to the accompanying drawings, in t5 Which- Figure l is a perspective view ot' a range or stove, the oven-door being left off to expose the interior. Fig. 2 is an enlarged front view of a stove-door, and Fig. 3 isa section through 2o line X X, Fig. 2. Fig. L is a longitudinal section through a portion oll a stove-oven and the back ilue. Fig. 5 represents a horizontal seo tion through a portion ot' a stove oven and door in or about line X X, Fig. 4; and Fig. 6

z5 is a detached view ofthe damper.

The oven-door (t is provided at the top with a series ot holes, a', and at the bottom with a series of smaller holes, a?. Below the face of the oven-doorissecureda thin plate, a3, having 3o a series of*tinely-perlorated plates, a4, near the top and a series of smaller plates, b, atror near the bottom. The centers ot' the plates a4 are arranged slightly below the centers of the holes a', and the centers ol'the perforated plates 35 b are placed above the centers ot' the holes a2, the object being to cause the air to pass in a short distance in the air-space c, between the plates and the side ot the door, so as to become heated when it enters the oven. When 4o used in a stove, both doors are constructed in this way. ln a range having but one door the door is constructed as above described, and the opposite end ofthe oven is also made in the same manner. ln Fig. l l have shown l45 an ordinary cooking-rangein perspective. The oven c is provided with a series of holes, o2, having a iinely-pertbrated plate, o3, bchlnd them. At the back ot' the holes c2 is arranged a damper, o5. c4 is the handle. The damper is 5o made of a. thin plate of metal having a series of holes corresponding with the holes c2, and is placed in slideways arranged in the ordinary way, so that when pulled out or pushed in the holes o2 may be closed or slightly closed or opened, as maybe desired. The damper c5 is secured in place by the holding and guide pieces e e, so it can be made to slide easily between them. It is provided with a series ot' hoes, e, which correspond in size, number, and distance apart witlrthe holes in 'the back of the oven. (See Figs. 4,5, and 6.) The object in using a series ot' tine holes along the ovendoors at the top and bottom and in the back ofthe oven is to distribute the air as it enters the oven more evenly and in very line jets, and the object in making the tine openings leading to the ilue in the back ofthe oven adjustable by means ofthe damper c5 is to regulate the amount ot' air passing in through all the said openings through the door, and consequently the circulation throughout the oven and the amount of' air and gases that pass-out, into, and through the tlue e5. A portion ofthe steam and gases generated during the process ol' cooking or baking, and air that passes in through the holes a u2, pass oit' through the openings o2 and plates ci. The object ot' this damper is to regulate the amountol' vapor and gases that pass out into the iiue and pipe while roasting or baking, and also to adjust the amount of all' that enters the holes a and passes out of the holes a2, and itconsequently regulates the amount ofthe aircircu lation within the oven. Some kinds ot' food generate more carbonio-acid gas than others, and therefore require the holes o2 to be opened more than for other kinds, so as to give a greater circulation and carry oft more ot' such gases, while other kinds ot' food require less, so that it is necessary that the size ofthe openings c2 should be capable of being ad- ]'usted.

l claim- A stove-oven having a double series ot'holes, a a2 a4 b, and an air-space, o, in combination with a series of openings, c2,in the back ofthe oven, and an adjusting-damper, substantially as and for the purposes described.

` JOHN W. THOMAS. Witnesses:

, J. M. CALDWELL,

J AMES SANGSIER. 

